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Error code reference
Sub-Zero Freezer Error Code 05
Refrigerator cabinet thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temperatures.
SourceSub-Zero 700-3 Tall Freezer - Service Manualp. 3-24, 8-3
Diagnostic procedure
The full 05 procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check refrigerator compartment thermistor electrical connections and continuity from thermistor to J1 on control board. Reconnect/repair connections. Check resistance for 30,000 to 33,000 ohms at 32°F (0°C). Replace if defective.
SourceSub-Zero 600-3 Series Freezer - Full Service Manualp. 3-21
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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